ProGuard on Android + reflection = NoSuchFieldException

Question

我的名字是马修，在使用ProGuard后，我在安卓系统的反射上遇到了一些困难。

我正在用libgdx编写游戏，我需要动态获取字符串，我有如下所示：

package com.PACKAGE;

    public class CLASS extends ANOTHER_CLASS{

        (...)

    private static void load(String fieldName) {
        Field field;
        String fileName;
        try {
            field = SOME_CLASS.class.getField(fieldName);
            fileName = (String) field.get(null);
        } catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
            throw new RuntimeException(e);
        }

         SOME_CLASS.SOME_METHOD.load(fileName);

    }

(...)

    private STH get(String fieldName) {
        Field field;
        String fileName;
        try {
            field = SOME_CLASS.class.getField(fieldName);
            fileName = (String) field.get(null);
        } catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
            throw new RuntimeException(e);
        }

         return SOME_CLASS.SOME_METHOD.get(fileName);

    }

(...)

}

导出发行版apk (编译好)并运行游戏之后，我得到了NoSuchFieldException：

java.lang.RuntimeException: java.lang.NoSuchFieldException: FIELD_NAME

我需要在proguard-project.txt中添加什么来处理这个问题？这不管用，我不知道该怎么做。

-keepclassmembers class com.PACKAGE.CLASS { 
    String fileName;
}

类的样子如下：

package com.ANOTHER_PACKAGE;
public class SOME_CLASS {
    public static final String fieldName1 = "string I want";
    public static final String fieldName2 = "string I want";
    public static final String fieldName3 = "string I want";
}

更新：

多亏了塞尔文，答案是

-keepclassmembers class ANOTHER_PACKAGE.SOME_CLASS { 
    public static final <fields>; 
}

在project-proguard.txt中。现在它工作得很好:)

Answer 1

在您的proguard.cnf文件中尝试以下操作

-keep public class * extends com.yoursite.android.yourappname.YourClassName

-keepclassmembers class * extends com.yoursite.android.yourappname.YourClassName{
 public <init>(android.content.Context);
}

参考文献：Proguard and reflection in Android